PIN or Password no longer works

Turned on my SP3 this am, entered my PIN, and I got the circulating dots that didn't disappear as usual. After 20 seconds or so the screen went blank and when I pressed the power button twice to get the screen back on (not a power reset) it says my account is locked. Did the same with my other account, got the same results. Tried my Microsoft password and got the same results. Haven't changed my PIN since setting it up. (~3weeks ago). Basically, I can't get into my SP3 anymore until this issue is fixed. Any help out there?